The impact of the operation mode on pattern formation in electrode reactions: From potentiostatic to galvanostatic control

Nadia Mazouz; Georg Flätgen; Katharina Krischer; Ioannis G. Kevrekidis

doi:10.1149/1.1838650

The impact of the operation mode on pattern formation in electrode reactions: From potentiostatic to galvanostatic control

Nadia Mazouz, Georg Flätgen, Katharina Krischer, Ioannis G. Kevrekidis

Research output: Contribution to journal › Article › peer-review

Abstract

Applying a constant voltage across an external resistor in series with an electrochemical cell allows the continuous variation of the experimental control mode from potentiostatic to galvanostatic. The model for electrochemical pattern formation presented for potentiostatic conditions in Ref. 1 is extended to account for this general case. The resistor introduces a global coupling into the model, interacting in a nontrivial manner with the nonlocal coupling through migration currents in the electrolyte which occur independently of the control mode. The complex interplay of these two coupling terms is investigated as a function of operating parameters, and is illustrated by simulations in the bistable regime of an electrochemical reaction.

Original language	English (US)
Pages (from-to)	2404-2411
Number of pages	8
Journal	Journal of the Electrochemical Society
Volume	145
Issue number	7
DOIs	https://doi.org/10.1149/1.1838650
State	Published - Jul 1998
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

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abstract = "Applying a constant voltage across an external resistor in series with an electrochemical cell allows the continuous variation of the experimental control mode from potentiostatic to galvanostatic. The model for electrochemical pattern formation presented for potentiostatic conditions in Ref. 1 is extended to account for this general case. The resistor introduces a global coupling into the model, interacting in a nontrivial manner with the nonlocal coupling through migration currents in the electrolyte which occur independently of the control mode. The complex interplay of these two coupling terms is investigated as a function of operating parameters, and is illustrated by simulations in the bistable regime of an electrochemical reaction.",

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The impact of the operation mode on pattern formation in electrode reactions: From potentiostatic to galvanostatic control

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